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zipcodes.pro — ZIP/18031

18031

ZIP 18031 is Breinigsville, Pennsylvania, mostly in Lehigh County; area codes 484, 610 and 835; Eastern time.

Type
Standard
Time zone
America/New_York
County
Lehigh +1 more
Population
11,570
Coordinates
40.5596, -75.6489
☼ Live from 18031 — Breinigsville, PA

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Where 18031 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 18031
  • 🔢 Type 18031 into a pocket calculator and turn it upside down: IEOBI — not quite a word, sorry.
  • ➕ As a number, 18,031 = 13 × 19 × 73. Its digits add up to 13, a total 1,179 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 100011001101111
  • 🏠 Its numerical neighbours: 18030 (Bowmanstown, PA, 17 mi away) and 18032 (Catasauqua, PA, 12 mi away).
  • 🔄 Backwards, 18031 becomes 13081 — and that is a real ZIP code: King Ferry, NY, 155 miles away.
  • 👥 30 other ZIP codes are made of exactly the same digits (01138, 01813, 01831, 03811, 08311, 10138, …). The farthest-flung twin is 83110 in Afton, WY, 1,810 miles away.
  • 🧭 Farther north than 61% of all ZIP codes, and farther east than 86%.
  • 🎯1,208 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 18031 and you would come out at 40.56°S, 104.35°E — 873 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 05m of daylight. Shortest: 9h 16m.
  • 📏 At 13.9 square miles of land, 18031 is bigger than 32% of ZIP codes — room for about 11 Central Parks.
🌙 The sky over 18031 today
  • Working out the sun…
🌋 Shake report
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Source: USGS.

People and housing

Population11,570This ZIP11,570
Households4,098This ZIP4,098
Housing units4,634This ZIP4,634
Median age39.4This ZIP39.4Pennsylvania40.9US 38.9
Median household income$113,625This ZIP$113,625Pennsylvania$77,971US $80,734
Median home value$373,400This ZIP$373,400Pennsylvania$254,500US $332,700
Median gross rent$1,949This ZIP$1,949Pennsylvania$1,209US $1,413
Bachelor's degree or higher53.5%This ZIP53.5%
Mean commute24.0 minThis ZIP24.0 min
Population density830.8 / sq miThis ZIP830.8 / sq mi

Business and tax activity

Business establishments214This ZIP214
Employees16,516This ZIP16,516
Annual payroll$846,582,000This ZIP$846,582,000
Tax returns filed5,730This ZIP5,730
Total adjusted gross income$595,172,000This ZIP$595,172,000

Land area

Land area13.93 sq miThis ZIP13.93 sq mi
Water area0.03 sq miThis ZIP0.03 sq mi

Counties 18031 spans

A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.

CountyShare of this ZIP
Lehigh County 98.7%
Berks County 1.3%

Other place names in 18031

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 18031

ZIPCityDistance
18195 Allentown, PA 2.1 mi
18051 Fogelsville, PA 2.7 mi
18087 Trexlertown, PA 2.9 mi
19538 Maxatawny, PA 2.9 mi
18106 Allentown, PA 4.4 mi
18046 East Texas, PA 4.7 mi
19539 Mertztown, PA 4.7 mi
19562 Topton, PA 4.8 mi
18069 Orefield, PA 4.9 mi
18062 Macungie, PA 5.2 mi

Find every ZIP code within 10 miles of 18031 →

Questions about this ZIP code

Where is ZIP code 18031?

18031 is in Breinigsville, Pennsylvania, in Lehigh County, part of the Allentown-Bethlehem-Easton, PA-NJ metropolitan area. Its published point location is 40.5596, -75.6489.

What county is 18031 in?

18031 spans 2 counties: Lehigh County and Berks County. Most of it falls in Lehigh County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.

What area code is 18031?

Breinigsville uses area codes 484, 610 and 835, from NANPA's telephone records.

What time zone is 18031 in?

18031 uses America/New_York.

How many people live in 18031?

About 11,570 people live in ZIP code 18031, in 4,098 households, at 830.8 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 18031?

$113,625 a year, against $77,971 across Pennsylvania.

What ZIP codes are near 18031?

The closest are 18195 (2.1 mi), 18051 (2.7 mi), 18087 (2.9 mi), 19538 (2.9 mi) and 18106 (4.4 mi).

Is 18031 a PO Box ZIP code?

18031 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “18031 ZIP Code — Breinigsville, Pennsylvania (Lehigh County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/18031

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